Thanks for your question and welcome to Just Answer. I am Sam and I am one of the UK tax experts here on Just Answer.
The scheme for you may well be the Flat Rate scheme as long as your turnover (income) is less than £150,000
This allows you to apply a flat rate to your sales which is lower than the standard rate, without the need to claim for VAT suffered.
I have added a link here from the HMRC website that explains the scheme - and its simplicity - but do feel free to ask any follow up questions.
However, if your turnover is more than £150,000 then I am afraid you will have to operate the normal VAT scheme, which means taking note of what charges you have incurred, and charging the appropriate rate on all sales.